chore(lib): Define Uniscribe itemization control - #3287
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This pull request updates the
Usp10Loaderclass to ensure proper support for bidirectional text analysis by reintroducing and defining theScriptControlstructure. This structure is now explicitly required for theScriptItemizefunction, even if its flags remain unused.Bidirectional text analysis support:
ScriptControlstruct withdefault_languageandreservedbit fields to ensure a non-null control structure is available for bidirectional analysis inScriptItemize. A comment explains the rationale and usage, referencing the need for non-null control in bidirectional scenarios.